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Analytic function not able to evaluate i

Posted Sep 4, 2021, 2:05 p.m. EDT Wave Optics, General, Parameters, Variables, & Functions Version 5.3 1 Reply

Peela Bharadwaj
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Hi, I am using an analytic function labeled as eps_cu , and i have give then expression for it as eps_real_cu(x) - i*eps_imag_cu(x) , this gives me an error . However , when i remove the i the error vanishes . Im not able to use other alternatives as well like 'j' or (-1)^0.5 Please help me Thank You

1 Reply Last Post Sep 6, 2021, 9:20 a.m. EDT
Magnus Ringh COMSOL Employee

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Posted: 3 years ago Sep 6, 2021, 9:20 a.m. EDT

Hi Peela,

To be able to use a function that returns complex numbers when using real-valued inputs, open the Advanced section and select the May produce complex output for real arguments check box.

Best regards,

Magnus

Hi Peela, To be able to use a function that returns complex numbers when using real-valued inputs, open the **Advanced** section and select the **May produce complex output for real arguments** check box. Best regards, Magnus

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